/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package br.com.ufpb.halloc.servlet;

import br.com.ufpb.halloc.comunicacao.Facade;
import br.com.ufpb.halloc.exceptions.ProfessorInexistenteException;
import br.com.ufpb.halloc.negocio.Professor;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Filipe
 */
@WebServlet(name = "ProfessoresEnvolvidosEmProjetosServlet", urlPatterns = {"/ProfessoresEnvolvidosEmProjetosServlet"})
public class ProfessoresEnvolvidosEmProjetosServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        //response.setContentType("text/html;charset=UTF-8");
        //PrintWriter out = response.getWriter();
        List<Professor>  lista;
        try {
            Facade fac = Facade.getInstance();
            lista = fac.buscarProfessoresComProjeto();
            if (lista.size()==0){
                request.setAttribute("mensagem", "Não existe professores cadastrados em projetos");
            }
            request.setAttribute("retorno", lista);
        } catch (ProfessorInexistenteException ex){
            request.setAttribute("mensagem", ex.getMessage());
            lista = new ArrayList<Professor>();
            request.setAttribute("retorno", lista);
        } finally {
            request.getRequestDispatcher("ProfessoresComProjeto.jsp").include(request, response);
        } 
        
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
